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A361586
Number of digraphs on n unlabeled nodes in which every node belongs to a directed cycle.
3
1, 0, 1, 5, 90, 5289, 1071691, 712342075, 1585944117738, 12152982231404393, 328276896613548366675, 31834464336872565979301363, 11234630426387288679040317490771, 14576388456695908232721134339830232699, 70075904005979773819582865772534172929477101
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
Table of n, a(n) for n=0..14.
PROG
(PARI) A361586seq(16) \\ See PARI link in A350794 for program code.
CROSSREFS
Column k=0 of A361590.
The labeled version is A086366.
Cf. A350794.
Sequence in context: A361551 A323570 A295766 * A367500 A216693 A158073
Adjacent sequences: A361583 A361584 A361585 * A361587 A361588 A361589
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Mar 16 2023
STATUS
approved

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Last modified November 7 14:19 EST 2024. Contains 377535 sequences.
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